Automatic metal-feed for type-casting machines.



M. F. BENTON. AUTOMATIC METAL FEED FOR TYPE CASTING MACHINES.

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Nl. F. BENTON. AUTOMATIC METAL FEED FOR TYPE CASTING MACHINES.

APPLICATION FILED )UNE 6.1916.

Patented July 9, 1918.

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M. F. BENTON. Amon/Imc METAL FEED Foa TYPE cAsnNG MAcHmes APPLICATION FILED JUNE (M1916.y

' Patented July 9,1918.

nNiEn sATEs .MORRIS FULLER, BENTON, or PLAINEIELD, NEW JERSEY, AssIGNon To AMERICAN TYPE EoUNLERs COMPANY, 0E JERSEY CITY, NEW JERSEY, A'CORPQRATION or NEW JERSEY.

, specification f Letters Patent.

Patented July 9, 1918.

Application ledJuneG, 1916. Serial No. 102,057.

To all whom-z'mayfconoewu Be it knownfthat I, MoRmsFULLER BEN- ToN, afcitizenfof the United States, resid-k ing-at 1:lainiield,U nion county, and Statel of NewJersey', have invented and discovered certain :new-and yuseful Improvements in Automatic Metal-Feeds for Type-'Casting Machines, vof which the following is a -specification. l -v The :present linvention l'relates to L'apparatus for feeding .pigs ofmetal fto melting lpots, and consistslnlthe arrangements and combinations v'of elements hereinafter described and particularly -set l,forth `in 'the accompanying claims.

The finvention has for lits purpose to lprovide'an v.arrangement for feeding' fpigs of metal to the melting pots `of type casting machines in a manner which willl insure con-y stancy of llevel offthe lmolten mass, and wherein the pigs are initially -pre-heateddi? rectly `from k*the furnace before Lentering the pot, to -the end that the temperature offthe molten metal vwill not be aifected byfthe'pig being fed thereto. l Y

The -further purpose lofjt'he invention resides in 'that solid metal, 'inpigs -of different sizes and rough cast, may be ffediinto the melting pot-at exactly =the rate "of Speed necessary for proper working, without {requiring any adjustments of parts, and wherein the moving parts-that require lubrication are removed from` the deteriorating influences of the Iheat and fumes from the furnace.'-

The invention isdisc'losed by way of'illustration in the,V accompanying drawings, Whereln- Figure 1 1s Ia front velevational view 'of a melting furnace showing the vapplication Iof the present invention, with 'parts broken away and in section for clearness.

Fig. 2 a side elevational view thereof, *f Figu' a transverse sectional view Iwith parts in elevation, l f n Fig. 4 a horizontal? sectional view ythrough the` gearing feed control, f f Fig. 5 a` longitudinal sectional viewtaken on the line 5'"5 of Fig. 4c, i 1

Fig. 6 a side elevational view ioffthe'escapement, f

Fig. 'fr' a perspective view .of the same, and F ig. 8 a ydetail-top view Yof the melting pot. Referring ,5to lthe construction in further detail, 1- represents Vthe melting '.potV of any melting furnace, which may .be heated, as usual, -by one or `more burners within the furnace 2 to fkeep the contained `metal A in a .moltenconditiom and said furnaceis'constructed with -outlet :openings 8, through which a varying portion of the produetsof combustion. pass after the manner showniby the arrows in Fig. 3. The remainder of the products of `combustion pass up through .holes 53, partially surroundingand extending'zthrough the rim lof the melting pot. (See iFig.

VA yoke or'frame 4 is suitably mounted on ther-furnace andsupportsa bracket or frame 5 that :is provided with a pair of apertured lugs' and-7 providing guides for .the -vertically'disposed and gravity actuated bar 8 that yis l:adapted to carry a pig of metal B. Saidfpig lis vformed with a head portion C thatfits within 'the slotted member 9mounted on the lower end ofthe bar 8; and said barlisadapted to be lowered progressively with andfat the frate of yconsumption'of the molten metal, in a manner to be presently described. A -shield 10, preferably constructed lof sheet metal, is adapted to partially yinclose the pig being fed to the ymolten mass, as

shown in Fig. 3,:and, with said pig, provides a flue, or chimney, to vdirect the products of combustion issuing :fromV the `outlet'opening 3, against the inclosed-sides of said pig, `to the end of partially fusing, or pre-heating, the pig-as it isafed to the molten liquid or point lof complete fusion, tand thereby maintaining a constant mean temperature 'of thev molten mass, z'. e, to guard against thel perio'diccooling of said imass, :as would be the case Awere the pig fed, ystep by step, to the f pig forms part olf one yside gof this 'chimney and `when first put in, lit ills'the openingin the Side yof the chimney, VWhensameis in operati-veposition, and under these conditions the maximum amount ofheat drawn i1 1.

through the holes 8 to pre-heat the pig. As the pig is fed into the melting pot, less and less heat is necessary and as the upper end ofthe vpig gradually falls below the top'v of the chimney, it uncovers more and more of the side opening therein, thus reducing the draft and the amount of heat drawn `through said holes 3, thus maintaining a substantially uniform temperature around said pig and keeping it in a uniform'stateas relating to its fusibihty at the point adiaf Y cent to the molten metal. If it were not for -fberr of the frame 5; and said bar has a channel or groove 16 for substantially .its

full' length and within which the sheave 15 and-the lowering chainportion fit, as indicated in Fig. 1. The purpose of thisconstruction is-to hold the bar 8 against rotation, thus lowering the pig steadily into the melting pot 1 and,'by having the chainr14 connected to the bari 8 inthe manner stated,

prevents any tendency of side-thrustson the bar and allows it to kdescend freely.

' The chain 14 passes around a vsheave and'enters the gear casing 18 where it -is',

wound .upon the sheave 19 V(see Fig.' 4) journaled on the shaft 20 in saidcasing.

- The sheave 19 is adapted to be intermittently rotated under the weight of the pig B and its supporting bar 8, and such movements are adapted to be controlled from a clockwork mechanism that is controlled by afloat 21 (seev Fig. 8) in the molten mass A.. The sheave 19 is constructed-as a double sheave Y (19 `and 19a), and the sheave portion 19aw thereof has a chain14a wound thereon in the direction reverse to that of the chain 14,

' whereby said sheave (19) may be'rotated to rewind'the chain 14.

The clock-work mechanism consists of a ratchet wheel 22 secured to the pinion 23 that is fixed to rotate with the shaft 2O, and

said ratchet is engaged bythe pawl 24 pivotally mounted onthe side of the she-ave 19,

as shown in Figs. A4 and 5. The pinion 23 meshes with a smaller pinion 25 connected to alarger pinion 26, and which, Yin turn, gears with a smaller-pinion 27 that is `fixed to rotate with vthe toothed wheel 28 .when said toothed wheel is engaged by the double pawl'or verge 29 that is pivotally lmounted on the'shaftBO that'supports the gear wheels 25 and '26.. yA-narm 31 (see Figs. 6 and 7) lis dependinglyf mounted on said ydouble pawl and has aflateral extension 32 adapted to vengag'e-with'the pointed end 33 of the verge bar 34 that is actuated by the ioa-t supporting lever 35 journaled on the support 36.

In'V operation the apparatus works after the following manner:'Assuming the level of the molten metal to have "fallen, the float 21 will be lowered, consequently raising the bar 34 from engagement with the verge arm 32. MThe verge 29 will now be free to vibrate on its pivot 30 and for each double-vibration Y Vthe toothed wheel 28 will be allowed to turn a distance of one tooth, due to the weight of the pig B and bar 8 pulling on the chain 14 and? turning the several gearV wheels, and,

theV pig having thus been lowered into the molten metal, the level of this metal will rise and with it the lioat 21. This willk cause the vergebar 34 to descend and engage the verge.. arm 32 and thus check the further descent of the pig until Ythe level of the molten metal falls again. y l

In order 'to place a new lpig in position,

the operator throws back the vshield or chimney 10 and .pullsdown onchain -141 on thesheave 19d until the feed bar yShasbeen raised toits uppermost position, when Ythe head of the new pig is inserted in the recess Y ofthe member 9. The shieldY is then pushed back into vertical position and the rewinding chain 14a is released. Thel bar 8 carries va collar 38v which comes into contact with the upper guide member V6 and `indicates the time for insertinga new-pig.

f It is obvious that those skilled in the art may vary. ,the details of construction-and arrangement of parts without departing from the spirit of my invention, and therefore I do not wish tovbej limitedy to such features except as may be'required by the claims.

' YHaving thus fully described my said invention, what VI claim as new and desire to secure by LettersPatent, is;

1. The combination wilra meltingy pot for holding 'a supply of `molten .metah Vand Vmeans for feeding a pig of metal thereto, lof a shield adapted to'inclose the pig-and eXtendrto below the metal holding pot and provide a flue to. conduct the. products of combustion up around said metal holding pot and pig, and-heatingY means loca-ted, be-

neathsaid pot, substantially. as setvforth..

2. The combination .with a melting pot Vfor holding a supply of Vmolten -metahand meansk for feeding a pig of metal thereto, ofv a heating device Vlocated beneath lsaid metal holding pot, and a shield extending from below said metal. holding pot] up around'said pig inclosing three sides there of, the `pig itself forming the v,fourth side,

whereby the heat is conducted frompsaidY heating device up aroundsaid pig above its part which projects into said metal holding f pot, substantially as set forth.

3. The combination with a having a combustion chamber provided .with an-outlet opening and means-for feeding a melting potY pig of metal to the molten mass, of a shield adapted to partly inclose the pig and form a flue to receive the products of combustion from said outlet opening, substantially as set forth.

4. The combination with a melting pot having a combustion chamber provided with an outlet opening and means for feeding a pig of metal to the molten mass, of a shield comprising a sheet metal plate constructed to form a flue, said flue communieating at one end to receive the products of combustion from the outlet opening and through which the pig is passed, and means for mounting said shield whereby the same may be moved into and out of position, substantially as set forth.

5. The combination with a melting pot having guides mounted thereon, of a gravity actuated bar mounted inV said guides and adapted to carry a pig of metal, and automatically actuated means for controlling the feed of said bar, substantially as setforth.

6. The combination with a. melting pot having guides mounted thereon, of a gravity actuated bar mounted in said guides and adapted to carry .a pig of metal, a flexible member connected with and supporting said bar, and automatically actuated means for controlling the movement of said flexible member to feed said bar, substantially as set forth. r

7 The combination with a melting pot having guides mounted thereon, of a gravity actuated bar mounted in said guides and adapted to carry a pig of metal, a flexible member connected with and supporting said bar, a float adapted to be supported bythe molten mass, and means connecting said float with the flexible member for automatically controlling the movement of the ilexible member to feed said bar, substantially as set forth.

8. The combination with a melting pot having guides mounted thereon, of a gravity actuated bar mounted in said guides and adapted to carry a pig of metal, a flexible member connected with and ksupporting said bar, a sheave on which said flexible member is wound, an escapement mechanism associated with the sheave, a float adapted to be supported by the molten mass, and means connecting said float with the escapement for automatically controlling the movement of the flexible member to feed said bar, substantially as set forth.

9. The combination with a melting pot having guides mounted thereon, of a gravity actuated bar mounted in said guides and adapted to carry a pig of metal, a flexible member connected with and supporting said bar, a sheave on which said flexible member is wound, a gearing connected to be driven by said sheave, an escapement associated with the gearing, a float adapted to be supported by the molten mass, and means connecting said float with the escapement for automatically controlling the movement of the flexible member to feed said bar, substantially as set forth.

10. The combination With a melting pot having guides mounted thereon, of a gravity actuated bar mounted in said guides and adapted to carry a pig of metal, a exible member connected with and supporting said bar, a sheave on which said flexible member is wound,'means for automatically controlling the unwinding of the sheave to feed said bar, a second sheave, and a flexible member wound on said second sheave for rewinding the flexible member on the first sheave to raise the pig supporting bar, substantially as set forth.

11. The combination with a melting pot having a frame mounted thereon provided with guides, of a gravity actuated bar mounted in said guides, said bar provided with a longitudinally disposed slot, a sheave journaled on the frame and fitting within the slot of said bar, a flexible member passing over the sheave and fitting within said slot and secured to the bar at the lower end thereof, and means for automatically controlling the movement of the flexible member to feed said bar, substantially as set forth.

1Q. The combination with a melting pot having a frame mounted thereon provided with guides, of a gravity actuated bar mounted in said guides and adapted to carry a pig of metal, a sheave mounted on said frame, a chain passing over said sheave and connected to said bar at the lower end thereof, a casing, a sheave journaled in said casing and having said chain woundthereon, a detent mechanism associated with said casing sheave, a float adapted to be supported by the molten mass, a lever connecting said float with the detent mechanism for automatically controlling Jdie movement of the chain to feed said bar, and means for rewinding the chain on said casing sheave to raise the pig supporting bar, substantially as Set forth.

In witness whereof, I have hereunto set my hand and seal at Jersey City, New J ersey, this 25th day of May, A. D. nineteen hundred and sixteen.

MORRIS FULLER BENTON. lVitnesses OTTO BAUER, J. R. MERRICK.

a Si

Copies of this patent may be obtained for five cents each, by addressing the Commissioner e! Patents. Washington, I). C. 

